• 제목/요약/키워드: 해빈

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연성 식생모형에 의한 해빈침식방지 특성에 관한 실험적 연구 (Hydraulic Experiment on the Effects of Beach Erosion Prevention with Flexible Coastal Vegetation)

  • 이성대;박정철;홍창배
    • 한국해양공학회지
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    • 제23권1호
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    • pp.31-37
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    • 2009
  • Coastal vegetation consists of rooted flowering marine plants that provide a variety of ecosystem services to the coastal areas they colonize. The attenuation of currents and waves and sediment stabilization are often listed among these services. From this point of view, artificial seaweed is an effective method of controlling sea bed sediment and stabilization without damaging the landscape or the stability of the coastline. A series of hydraulic experiments were performed in a wave channel with regular and irregular waves to examine the effect of artificial seaweed in relation to scouring and beach erosion prevention. Based on the results of these experiments, the coastal vegetation model is efficient against scouring and beach erosion.

인공양빈해안의 해빈특성에 관한 연구 (A Study of the Behaviors of Nourishing Sand on the Artificial Nourishment Beach)

  • 민병형;김가현;김진생
    • 한국해양공학회지
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    • 제1권2호
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    • pp.60-66
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    • 1987
  • The object of this study is to investigate behaviors of beach fill replenished at three coasts of different configurations by analyzing successively measured beach profiles. The main results obtained in this study are summarized as follows; 1) The amount of nourishing sand moved in the longshore direction surpasses the amount of nourishing sand transported in the cross-shore direction regardless of shapes of the coasts and types of the structures. 2) A clear correlation between displacements of shoreline and changes of sectional areas can be found soon after the placement of beach fill in the fields. This implies that the deformation of the artificial nourishment and dissipation or remaining rate of nourishing sand can be predicated by the one-line theory. 3) The patterns of sediment movements in the artificially nourished beaches are clearly found by the analysis of empirical eignfuncitions.

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카메라 모니터링 자료를 활용한 남해안/제주 해빈 침식 분석 (South/Jeju Coast Beach Erosion Analysis Using Camera Monitoring Data)

  • 김태림
    • 한국지형학회지
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    • 제23권1호
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    • pp.129-140
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    • 2016
  • Camera monitoring data for 5 years from January 2009 to January 2014 are analyzed to investigate changes in beach erosion on Sangju, Gujora and Haeundae beaches on the South sea and Jungmun beach on the south shore of Jeju Island. The data show the time series of beach area changes obtained from digital orthoimages rectified from oblique images taken near the beaches by cameras. Each beach has different sediment sizes and shapes, but faces the South and is eroded mainly during Typhoons. However, each beach often responds differently to the same Typhoon, and some beaches outside the influence of the Typhoon are also eroded. This study shows that high frequency data of beach area changes obtained from cameras can effectively analyze the seasonal changes in beach area.

항공사진을 활용한 양양 해안사구 지역의 토지피복 변천 분석 (Analysis of Land Cover Change of Coastal Sand Dunes in Yangyang Using Aerial Photographs)

  • 한갑수;김경남
    • 한국지리정보학회지
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    • 제13권2호
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    • pp.107-118
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    • 2010
  • 본 연구의 목적은 양양지역에 위치하는 오산사구 및 동호사구를 대상으로 사구지역의 범위를 설정하고, 항공사진을 이용하여 시계열적 토지피복의 변천 특성을 파악하는 것이다. 토양도의 특성을 이용하여 사구지역의 범위를 설정하였으며, 항공사진을 활용하여 시기별 토지피복도를 작성하였다. 토지피복의 분석결과, 오산사구 및 동호사구 모두 1974년 이래 해빈과 농경지의 면적이 계속해서 감소한 것으로 나타났으며, 산림지 면적은 상대적으로 증가하였는데 이는 해빈에서의 수목식재와 산림면적의 자연적인 증가에 기인한 것이었다. 한편, 시설지와 나지는 전 시기에 걸쳐 증가한 것으로 나타났으며, 특히 1992년 이후 크게 증가한 것으로 나타났다. 이러한 변화는 습지, 해빈 등의 감소로 이어져 사구생태계에 영향을 미친 것으로 분석되었다.